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KS0073 Datasheet(PDF) 25 Page - Samsung semiconductor |
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KS0073 Datasheet(HTML) 25 Page - Samsung semiconductor |
25 / 78 page ![]() 34COM/60SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD S6A0073 25 INSTRUCTION DESCRIPTION OUTLINE To overcome the speed difference between internal clock of S6A0073 and MPU clock, S6A0073 performs internal operation by storing control information to IR or DR. The internal operation is determined according to the signal from MPU, composed of read/write and data bus. Instruction can be divided largely four kinds, (1) S6A0073 function set instructions ( set display methods, set data length, etc.) (2) address set instructions to internal RAM (3) data transfer instructions with internal RAM (4) others . The address of internal RAM is automatically increased or decreased by 1. When IE = "High", S6A0073 is operated according to Instruction Set 1 (Table 6) and when IE = "Low", S6A0073 is operated according to Instruction Set 2 (Table 10). NOTE: During internal operation, Busy Flag (DB7) is read High. Busy Flag check must be preceded the next instruction. When an MPU program with Busy Flag (DB7) checking is made, 1/2 fOSC is necessary for executing the next instruction by the falling edge of the 'E' signal after the Busy Flag (DB7) goes to "LOW". |
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